Skip to main content
Cart 0
Your Bag

Radian® 3RXT

$449.99

The original 3 across All-in-One convertible car seat


$449.99
OR

Enjoy worry-free buying and perks with the Diono Difference

Recieve perks when you shop on diono.com


Additional 2-Year Warranty

Receive an additional 2-year warranty on all car seats and strollers purchased from diono.com

Free Shipping on orders over $400*

Diono proudly offers free shipping on orders over $400

Unlock exclusive offers & discounts

Unlock exclusive news, offers and discounts on all diono.com products.

1-2-1 Virtual Car Seat Fitting

Book a 1-2-1 virtual car seat fitting with a member of our car seat safety team.

* T & C's apply

Radian® 3RXT

The Diono Radian® 3RXT is the original 3 across All-in-One convertible car seat, trusted by over a million parents to protect their child from birth to booster (2.2 kg - 54 kg / 5 - 120 lb) Lovingly engineered with the famous Diono Steel Core and now rear-facing for even longer, expect 10 years of safety from just one car seat.

Features:

  • AWARD WINNING RADIAN ALL-IN-ONE CONVERTIBLE CAR SEAT - From infant to booster seat, rear and forward facing the radian® 3RXT adapts as your child grows for 10 years of use (2.2 - 54 kg / 5 - 120 pounds).
  • REAR FACING FOR LONGER - Designed for safe rear facing travel from 2.2 - 22.7 kg / 5 - 50 pounds complete with newborn travel high wedge to protect as they grow from baby, infant to toddler.
  • SLIM FIT DESIGN FOR 3 ACROSS - As your family grows, the slim fit design will fit 3 across in most vehicles without compromising child safety or passenger comfort.
  • ONE HAND EASY ADJUST 12 POSITION HEADREST - Creates a safe and comfortable fit for rear facing, forward facing and booster seat modes.
  • STEEL REINFORCED FRAME - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.

Product Specs

  • Minimum User Weight: 2.3 kg / 5 lb
  • Maximum User Weight: 54 kg / 120 lb
  • Minimum User Weight - Rear Facing: 2.3 kg / 5 lb
  • Maximum User Weight - Rear Facing: 22.7 kg / 50 lb
  • Maximum User Weight - Rear Facing LATCH: 15.8 kg / 35 lb
  • Minimum User Weight - Forward Facing: 10 kg / 22 lb
  • Maximum User Weight - Forward Facing: 29.5 kg / 65 lb
  • Maximum User Weight - Forward Facing LATCH: 18 kg / 40 lb
  • Minimum User Weight - Booster: 18 kg / 40 lb
  • Maximum User Weight - Booster: 54 kg / 120 lb
  • Maximum User Height: 145 cm / 57.1 in
  • Number of Head Support Positions: 12
  • Product Height: 72.4 cm / 28.5 in
  • Product Width: 43.2 cm / 17 in
  • Product Depth: 40.6 cm / 16 in
  • Seat Weight: 12.76 kg / 28.1 lb

Care & Maintenance

Covers: Machine wash cold, line dry. Shell and Components: Spot clean

Warranty Information

12 months standard warranty

The Diono Difference

The Radian® R series features a unique combination of diono car seat engineering and rigorous testing.
Every Radian® All-in-One Convertible Car Seat is designed to adapt as your child grows to offer a custom fit from birth to booster (up to 54 kg.)
Built with our famous Radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.
Engineered to keep your child rear-facing for longer up to 22.7 kg.

Reviews